Chinese Virtual Observatory (China-VO)

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Chinese Virtual Observatory(China-VO)

• Chenzhou Cui
• Chinese Virtual Observatory Project
• National Astronomical Observatory of China

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Chinese Virtual Observatory

• Agenda
• Why China-VO
• History
• Research Development Focuses
• Latest Progress
• Partners and collaboration

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Development of China-VO

• Advanced research platform for Chinese
  astronomers
• Acquire data and technologies from IVOA partners
• Share our data (LAMOST, SST, FAST, BATC ) with
  international astronomers
• Bring up a group of VO-oriented astronomers,
  engineers and students
• Public Education

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Milestones

• Nov. 2001, the 1st national VO meeting
• Jul. 2002, China-VO project initiated
• Oct. 2002, joined to IVOA
• Feb. 2003, first grid service, Hello China-VO
• May 2003, ConeSearch service prototype
• Jun. 2003, System design documents (draft)
• Sep. 2003, the 2nd national VO meeting
• China-VO WG established
• Oct. 2003, Demo Chemical Evolution
• Research of the Galaxy under Grid Environments
• Nov. 2003, IVOA Small Projects Meeting
• Mar. 2004, VOTFilter

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Principles for China-VO RD

• Interoperable and Compatible with IVOA
• Based on Grid
• Free software cheap Hardware
• International collaboration

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China-VO RD focuses

• Unlike NVO, Euro-VO and AstroGrid, as a small VO
  project,
• China-VO will emphasize on applications and
  portals.
• But we will take part in the developments of IVOA
  standards and infrastructure actively.

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RD Focuses

• China-VO Platform Construction
• Integrated Data Access Service for national and
  international astronomical datasets
• Legacy Application Integration
• Astronomical Instrument Integration
• VO-enabled LAMOST
• Education

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Architecture China-VO Platform
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SOA China-VO Platform
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Topology China-VO Platform
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Legacy Application Integration

• existing Software Packages, Toolkits, Libraries
• Astronomical Utilities
• Image Manipulation
• Math and Statistics
• Plotting

the more simple I/O and simple user interface the
more easier to integrate
IRAF, MIDAS, AIPS, need much user
interaction almost impossible for integration
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Data Access Services

• IVOA DAL and Interoperability standards
• VOTable, SIA, UCD, VOQL, etc.
• easy access to national and international
  astronomical datasets
• especially important for countries absent of
  large observation instruments

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Astronomical Instrument Integration

• Current projects
• NAOC 2.16m telescope
• Yunnan observatory 2.4m telescope
• public internet observatory
• wide-field camera, 35cm, 60cm
• Tsinghua Univ. 40cm public telescope

NAOC 2.16 m telescope
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VO-enabled LAMOST
Large sky Area Multi-Object fibre Spectroscopy
Telescope
Clear aperture? 4m Field of view ? 5 Focal
plane ? 1.75m Focal length20m Number of
fibers4000 Spectral ranges370900nm Spectral
resolution1 0.25nm Sky coverageDeclination
-10 ? to90?
A meridian reflecting Schmidt telescope
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VO-enabled LAMOST

• VO-enabled
• LAMOST data
• LAMOST telescope
• LAMOST Spectral Analysis Pipeline

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VO-based Education

• international education resource access
• bilingual Skymap
• English-Chinese astronomical dictionary
• Amateur Astro-Photography Gallery
• China-VO education portal

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Latest Progress

• Data Access Service
• Chemical Evolution Research of the Galaxy under
  Grid Environments
• VOTFilter
• gImageMagick
• China-VO Service Registry

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Database Access Service
Chart courtesy of Jian Sang
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Database Access Service

• Catalog Selection
• ConeSearch
• RA
• DEC
• Radius

http//ns2.lamost.org8080/cvo/
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Galactic Abundance Gradients Analysis
Data Access
Orbit Computing
Statistic Analysis
Databases
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VOTFilter

• An XML Filter written in XSLT
• for OpenOffice Calc
• to readwrite files in
• VOTable format
• VOTable
• The first standard from IVOA
• an XML format defined for the exchange of tabular
  data in the context of the Virtual Observatory

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Usage and Snapshot
http//services.china-vo.org/vofilter/
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Funding and Collaboration

• Funding
• 500,000 RMB (63,000 USD)
• NSF China
• MOST (Ministry of Science and Technology, China)
• CAS (Chinese Academy of Sciences)
• Collaboration
• WDC-China
• CNGrid project (CNIC)
• Xinglong Station (NAOC)
• LAMOST project (NAOC)

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Partners

• National Astronomical Observatories, CAS
• Beijing, Yunnan,
• Astronomy Department, Peking University
• University of Science and Technology of China
• Astrophysics Center, Tsinghua University
• Physics Department, Central China Normal
  University
• Computer Network Information Center, CAS
• Supercomputing Center, CAS
• Institute of Computing Technology, CAS

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Thank You

Q A
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